Add mvconfig tag

Signed-off-by: Justin Georgi <justin.georgi@gmail.com>

includes/GlModelHooks.php

@@ -34,6 +34,28 @@ class GlModelHooks {
         }
     }
 
+    /**
+     * MWHook: Called when the parser initializes for the first time
+     * 
+     * @param Parser $parser: Parser object being initialized
+     */
+    static function onParserFirstCallInit( $parser ) {
+        $parser->setHook('mvconfig', array( __CLASS__, 'renderConfigTag'));
+    }
+
+    /**
+     * Render the config json in a <pre> tag
+     * 
+     * @param $input The text inside the custom tag
+     * @param array $args Any attributes given in the tag
+     * @param Parser $parser The parser object
+     * @param PPFrame $frame The parent frame calling the parser
+     * @return string HTML string of output
+     */
+    static function renderConfigTag( $input, array $args, $parser, $frame ) {
+		return '<pre mvconfig>' . $input . '</pre>';
+	}
+
     /**
      * MWHook: Load the js and css modules if model-viewer element is found in the html output
      * 
@@ -110,7 +132,7 @@ class GlModelHooks {
     public static function onUploadFormBeforeProcessing( $uploadFormObj ) {
         $uploadFormObj->mComment .= <<<CONF
         
-        <pre>
+        <mvconfig>
         {
         "viewerConfig": {
             "default": {
@@ -120,7 +142,7 @@ class GlModelHooks {
         "annotations": {},
         "annotationSets": {}
         }
-        </pre>
+        </mvconfig>
         CONF;
 
         return true;